What is the minimum headroom required for spiral stairways?

The minimum headroom requirement for spiral stairways is generally 78 inches. This standard ensures that there is enough vertical clearance for individuals using the staircase, allowing for comfortable and safe passage. Adequate headroom is especially important in spiral stairways due to their unique design, which can create tighter turning radii and limited space compared to traditional straight staircases.

In residential and commercial applications, specifying a headroom of 78 inches helps prevent potential accidents, such as head injuries, and promotes accessibility for all users, including taller individuals. This measurement is in line with various building codes that emphasize the importance of safety and usability. Other options indicate higher requirements, which, while they may offer greater comfort, are not the minimum mandated standards.